Whether you are at home or in wilderness, you could hardly be far away from scary looking spiders. There are approximately 40,000 and its hard to find out which can pose threat to human life. Though only a small number is said to be dangerous, venom of some species can cause allergic reactions as well as other fatalities. Here we have ranked the spiders basis how common , aggressive and how dangerous is its venom to humans.
1. Brazilian Wandering Spider
Similar to North American Wolf by its look with most neurologically active venom amongst all spiders and is considered as the most dangerous in the world. They travel a lot as they are very active and sometimes crawl into fruits and flowers that human cultivate.
2. Six-eyed Sand Spider
It is a relative of the Recluse spider and can only be found in deserts of South Africa. Covered in little hair (setae) pick up sand and makes camouflage out of the sand. The venom is dangerous because of the presence of toxin called cryotoxin. Shortly after the bite the toxin spreads kidney and liver leading to death.
3. The Sydney Funnel Web Spider
Found in Australia and got its name from the unique way they build their webs. Sydney Funnel Spider has long fangs and the venom has very high pH level. Once bitten the person may start drooling because of the numbness around the mouth and may loose consciousness.
4. Brown Widow Spider
Widow spider has spindly legs and globular abdomen with very poor vision. The venom of brown widow spider is more toxic than Black Widow Spider.
5. Black Widow Spider
This is much feared because its believed that bite of a black widow spider 15 times stronger than that of a rattle snake. The spider only bites in self defense and bites can be fatal specially to children.
6. Brown Recluse Spider
Also known as violin spiders because of their violin shaped marking on the head. They often den in footwear. clothing, beds. What set them apart is their six eyes which is less than eight in most other spiders. From a bite, a blister will grow and then the tissue become hard. A bite can develop into volcano like lesion and leaves a nasty open wound.
7. Yellow Sac Spider
One interesting fact about these type of spiders is they love the smell of gasoline. Though small in appearance, can deliver a very nasty bite. Bites are usually characterized by stinging pain followed by swelling redness which can further develop into a blister.
8. Fringed Ornamental Tarantula
The names comes from a Spanish dance and symbolizes how people jump around when bitten by these spiders. Although they have a terrifying demeanor, their bites are not so dangerous and merely not worse than a bee sting
9. Wolf Spider
They are usually gray or brown and hairy. The eye arrangement in a wolf spider is very interesting- four small eyes at the bottom and two large eyes in the middle row followed by two medium eyes in the top row. They do not make webs and actively looks for their prey.
10. Redback Spider
Identified by the red strip on its black-colored back. It is usually not aggressive but bites when they feel trapped. It slowly inject venom and that can cause pain, rapid heartbeats nausea and vomiting.
Spiders are vital part of the ecosystem and most of them are harmless. Now you know which could be incredibly venomous and the good news is there have been very rare death cases from a spider bite. Pain from non- venomous could cause pain up to 60 minutes where as critical bites may last longer than 24 hours.